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comparison core/src/luan/impl/EqExpr.java @ 191:2456ef7ada02

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minor git-svn-id: https://luan-java.googlecode.com/svn/trunk@192 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Tue, 01 Jul 2014 06:40:48 +0000
parents 3dcb0f9bee82
children 17b02b56d806
comparison
equal deleted inserted replaced
190:04b86428dc50 191:2456ef7ada02
13 EqExpr(LuanSource.Element se,Expr op1,Expr op2) { 13 EqExpr(LuanSource.Element se,Expr op1,Expr op2) {
14 super(se,op1,op2); 14 super(se,op1,op2);
15 } 15 }
16 16
17 @Override public Object eval(LuanStateImpl luan) throws LuanException { 17 @Override public Object eval(LuanStateImpl luan) throws LuanException {
18 return eq(luan);
19 }
20
21 private boolean eq(LuanStateImpl luan) throws LuanException {
18 Object o1 = op1.eval(luan); 22 Object o1 = op1.eval(luan);
19 Object o2 = op2.eval(luan); 23 Object o2 = op2.eval(luan);
20 if( o1 == o2 || o1 != null && o1.equals(o2) ) 24 if( o1 == o2 || o1 != null && o1.equals(o2) )
21 return true; 25 return true;
22 if( o1 instanceof Number && o2 instanceof Number ) { 26 if( o1 instanceof Number && o2 instanceof Number ) {
30 LuanTable mt2 = luan.getMetatable(o2); 34 LuanTable mt2 = luan.getMetatable(o2);
31 if( mt1==null || mt2==null ) 35 if( mt1==null || mt2==null )
32 return false; 36 return false;
33 Object f = mt1.get("__eq"); 37 Object f = mt1.get("__eq");
34 if( f == null || !f.equals(mt2.get("__eq")) ) 38 if( f == null || !f.equals(mt2.get("__eq")) )
35 return null; 39 return false;
36 LuanBit bit = luan.bit(se); 40 LuanBit bit = luan.bit(se);
37 LuanFunction fn = bit.checkFunction(f); 41 LuanFunction fn = bit.checkFunction(f);
38 return Luan.toBoolean( Luan.first(bit.call(fn,"__eq",new Object[]{o1,o2})) ); 42 return Luan.toBoolean( Luan.first(bit.call(fn,"__eq",new Object[]{o1,o2})) );
39 } 43 }
44
45 @Override public String toString() {
46 return "(EqExpr "+op1+" "+op2+")";
47 }
40 } 48 }